Tap and die holder.



PATBNTED MAR. 13. 1906.

- c. E. COLE.

TAPLANDDIE HOLDER, APPLICATION FILED DBO. 12,1994.

warms ST T Es? i i rtwmma Y I CLIFFORD ELBRIDGE corn, or; BIRMINGHAM,ALABAMA,

Specification of Letters Patent.

Patented March 13, 1906.

Application filed 158061 1536! 12,1904. $erial No. 236, 01.

To all whom it may concern: I I

Be it known that I, CLIFFORD 'E'L ID E COLE, a citizen offthe UnitedStat es, residing atBirmingham, in the county of- Jefferson and State ofAlabama, have invented new and-useful Improvements in Tap and DieHolders, of which the following is a specifica of the stock without thenecessity .of removing the adjustingscrews by means of which the diesare secured in position upon the stock. r a

A further object of the invention isto render the bushings of thestockadjustable in such manner that pipes of greatly-varying sizes maybe operated upon.

The first object ofthe invention is attained, preferably, by forming ineach of the dies an open-ended slot through which the adj ustingupon thestock extends.

screw by means of which the'die is secured the dies with anopen-endedslot it'is necessary merely to loosen the adjusting-screw andmove the die in a longitudinal direction. The new die is secured inposition by fitting its open-ended slot around the adjustingscrew andmoving it in a longitudinal direction, after which the adjusting-screwis tightened to clamp thedie in position. i

The second object of the invention is attained, preferably, by providingeach stock with a pair of sliding bushings each formed with anopen-ended slot through which ex-- tends an adj usting-screw.

In order that the invention may be more clearly understood, onepractical embodiment thereof will be described and claimed hereinafter.r

In the accompanying drawings, forming part of this specification, Figure1 is aperspective view of a die-stoclrhavihg dies and bushings.constructed in accordance with the present invention. Fig. 2 is-a planview thereof, showing the improved dies. Fig. 3 is an under plan viewshowing the improved dinal section. Fig. 5 is a transverse section onthe line 5 5, Fig. 1. of an improved die constructed in accordance. withthe present invention. Fig. 7 is a similar' view of an improvedsliding'bushing. Like referencenumerals indicate corresponding parts inthe difierent views.

By forming each of Fig. 4 is a vertical longitu Fig. 6 is a detail viewThenumeral 1 represents the die-stock; I, I

flanges forming guideways in which'the ad- 5 i justabl'e dies andbushings hereinafter dcscribed are adapted to fit. One of the flanges .4preferably'is formed with scale-marks, as 6 5 usual, in order'to,provide for the proper longitudinal adjustment of the dies. Theim- 4proved dies 6 of this invention-are each formed, preferably, withanopen-ended slot 7, which opens out at the rear end thereof.-

, The adjusting-bolts 8, by means of which the dies are secured upon thestock, extend through the-open-ended slots 7, as-shown. In order toprevent rearward slipping movement of the dies 6 after they have beenad- 7 5 j usted to proper position, an inclined upright, such as 9, issecured to or formed integral upon the stock 1 in rear of each die 6, anadjusting-screw 10 extending through each of said inclined uprights andabutting against the rear end-of theadjacent die. It is necessary thateach of the uprights 9 be inclined,

as shown, in order thatthe adjusting-screw 10 may not enter theslot 7,and thus fail of" its function. From the foregoing description it willbe apparent that when it is desired to remove one set of dies 6. and tosubstitute another set the entire withdrawal of the adjusting-screws 8is unnecessary. -On

the contrary, it is necessary only to loosen the adjusting-bolts 8 andto move the dies in a longitudinal direction until the open-endedslots'7 become disengaged from said adjusting-bolts. i

V In order to adapt the improved stock to fit 5 pipes of greatly-varyingsizes, a pair of slid- 7 ing bushings, such as 11, is secured upon theside of the stock opposite the dies 6 by means. of adjusting-bolts 12.Each of the sliding bushings 11' is formed with an open-ended roo slot13, by means of which it may be removed readily from the stock, ifdesired. In moving the improved stock of this inventionlongitudinallyalonga pipe the bushings 11 may i be adjusted away fromeach other when it 10'5 becomes necessary to pass a bur or large joint,after which said bushings may be moved again into their proper position.

Referring to Figs. 6 and 7, it will be observed that the slots 7 and 13in the dies 6 no I and bushings 11 may be formed with flared ends, thusadapting said dies and bushings to be used in connection with differentsizes of pipes by merely reversing the dies and bushlngs.

I am not aware that dies have been con structed with an open-ended slot,by means of which they are adapted not only to be adjusted in alongitudinal direction, but also to be removed readily from the stockwithout the necessity of removing the adjustingbolts, the objection tothe old form of dies being 'that they cannot be removed from the1sjtolck without the removal of the adjusting- Changes in the preciseembodiment of invention illustrated and described may be made within thescope of the following claims and without departing from the spirit ofthe invention or sacrificing any of its advantages.

Having thus described the invention, what is claimed as new is 17 Adie-stock having straight parallel guide-flanges, a die fitted betweensaid guideflanges formed with an open-ended slot, said die being freelyremovable from between said guide-flanges, an adjusting-bolt extendingthrough said slot, and an adjusting-screw arranged to engage the rearend of said die on one side of said open-ended slot.

2. A die -stock having parallel guideflanges, a die fitted between saidguidefianges and formed with an open-ended slot, said die being freelyremovable from bctween said flanges, an adjusting-bolt extending throughsaid slot, an inclined upright on said stock, and an adjusting screwextending through said upright and abutting against the rear end of saiddie on one side of said slot;

In testimony whereof I aflix my signature in presence of two witnesses;

CLIFFORD ELBRIDGE COLE.

Witnesses:

JOHN P. BRAND, E. W. FINCH;

